| 7500 | ÷ | ( | 260 | + | 1872 25 | ) | + | 10000 | ÷ | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | = | a |
| 方程两边同时乘以: | ( | 260 | + | 1872 25 | ) |
| 7500 | + | 10000 | ÷ | ( | 260 | + | 312 5 | ) | × | ( | 260 | + | 1872 25 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | = | a | ( | 260 | + | 1872 25 | ) |
| 7500 | + | 10000 | ÷ | ( | 260 | + | 312 5 | ) | × | 260 | + | 10000 | ÷ | ( | 260 | + | 312 5 | ) | × | 1872 25 | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | = | a | ( | 260 | + | 1872 25 | ) |
| 7500 | + | 10000 | ÷ | ( | 260 | + | 312 5 | ) | × | 260 | + | 10000 | ÷ | ( | 260 | + | 312 5 | ) | × | 1872 25 | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | = | a | × | 260 | + | a | × | 1872 25 |
| 7500 | + | 2600000 | ÷ | ( | 260 | + | 312 5 | ) | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | = | a | × | 260 | + | a | × | 1872 25 |
| 7500 | + | 2600000 | ÷ | ( | 260 | + | 312 5 | ) | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | = | 8372 25 | a |
| 方程两边同时乘以: | ( | 260 | + | 312 5 | ) |
| 7500 | ( | 260 | + | 312 5 | ) | + | 2600000 | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | × | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | = | 8372 25 | a | ( | 260 | + | 312 5 | ) |
| 7500 | × | 260 | + | 7500 | × | 312 5 | + | 2600000 | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | × | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | = | 8372 25 | a | ( | 260 | + | 312 5 | ) |
| 7500 | × | 260 | + | 7500 | × | 312 5 | + | 2600000 | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | × | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | = | 8372 25 | a | × | 260 | + | 8372 25 | a | × | 312 5 |
| 1950000 | + | 468000 | + | 2600000 | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | × | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | = | 435344 5 | a | + | 2612064 125 | a |
| 5018000 | + | 748800 | ÷ | ( | 260 | + | 312 5 | ) | × | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | = | 13495664 125 | a |
| 方程两边同时乘以: | ( | 260 | + | 312 5 | ) |
| 5018000 | ( | 260 | + | 312 5 | ) | + | 748800 | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | ( | 260 | + | 312 5 | ) | = | 13495664 125 | a | ( | 260 | + | 312 5 | ) |
| 5018000 | × | 260 | + | 5018000 | × | 312 5 | + | 748800 | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | ( | 260 | + | 312 5 | ) | = | 13495664 125 | a | ( | 260 | + | 312 5 | ) |
| 5018000 | × | 260 | + | 5018000 | × | 312 5 | + | 748800 | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | ( | 260 | + | 312 5 | ) | = | 13495664 125 | a | × | 260 | + | 13495664 125 | a | × | 312 5 |
| 1304680000 | + | 313123200 | + | 748800 | ( | 260 | + | 312 5 | ) | + | 30000 | ÷ | ( | 260 | + | 52 5 | ) | × | ( | 260 | + | 1872 25 | ) | ( | 260 | + | 312 5 | ) | ( | 260 | + | 312 5 | ) | = | 701774528 25 | a | + | 4210647168 625 | a |